7 RBTS PAPER(PHYSICS)
7 RBTS PAPER

164187 The density of a gas is \(6 \times 10^{-2} \mathrm{~kg} / \mathrm{m}^3\) and the root mean square velocity of the gas molecules is \(500 \mathrm{~m} / \mathrm{s}\). The pressure exerted by the gas on the walls of the vessel is :

1 \(5 \times 10^3 \mathrm{~N} / \mathrm{m}^2\)
2 \(1.2 \times 10^{-4} \mathrm{~N} / \mathrm{m}^2\)
3 \(0.83 \times 10^{-4} \mathrm{~N} / \mathrm{m}^2\)
4 \(30 \mathrm{~N} / \mathrm{m}^2\).
7 RBTS PAPER

164188 A cubic vessel (with face horizontal + vertical) contains and ideal gas at NTP. The vessesl is being carried by a rocket which is moving at a speed of \(500 \mathrm{~ms}^{-1}\) in vertical direction. The pressure of the gas inside the vessel as observed by us on the ground

1 remains the same because \(500 \mathrm{~ms}^{-1}\) is very much smaller thatn \(v_{r m s}\) of the gas.
2 remains the same because motion of the vessel as a whole does not affect the relative motion of the gas molecules and the walls.
3 will increase by a factor equal to \(\left(v_{r m s}^2+(500)^2\right) / v_{r m s}^2\) where \(v_{r m s}\) was the original mean square velocity of the gas.
4 will be different on the top wall and bottom wall of the vessel.
7 RBTS PAPER

164189 At what temperature is the r.m.s velocity of a hydrogen molecule equal to that of an oxygen molecule at \(47^{\circ} \mathrm{C}\) :

1 \(80 \mathrm{~K}\)
2 \(-73 \mathrm{~K}\)
3 \(3 \mathrm{~K}\)
4 \(20 \mathrm{~K}\).
7 RBTS PAPER

164190 For a gas if ratio of molar specific heats at constant pressure and volume is \(\gamma\) then value of degrees of freedom is :

1 \(\frac{3 \gamma-1}{2 \gamma-1}\)
2 \(\frac{2}{\gamma-1}\)
3 \(\frac{9}{2}(\gamma-1)\)
4 \(\frac{25}{2}(\gamma-1)\)
7 RBTS PAPER

164187 The density of a gas is \(6 \times 10^{-2} \mathrm{~kg} / \mathrm{m}^3\) and the root mean square velocity of the gas molecules is \(500 \mathrm{~m} / \mathrm{s}\). The pressure exerted by the gas on the walls of the vessel is :

1 \(5 \times 10^3 \mathrm{~N} / \mathrm{m}^2\)
2 \(1.2 \times 10^{-4} \mathrm{~N} / \mathrm{m}^2\)
3 \(0.83 \times 10^{-4} \mathrm{~N} / \mathrm{m}^2\)
4 \(30 \mathrm{~N} / \mathrm{m}^2\).
7 RBTS PAPER

164188 A cubic vessel (with face horizontal + vertical) contains and ideal gas at NTP. The vessesl is being carried by a rocket which is moving at a speed of \(500 \mathrm{~ms}^{-1}\) in vertical direction. The pressure of the gas inside the vessel as observed by us on the ground

1 remains the same because \(500 \mathrm{~ms}^{-1}\) is very much smaller thatn \(v_{r m s}\) of the gas.
2 remains the same because motion of the vessel as a whole does not affect the relative motion of the gas molecules and the walls.
3 will increase by a factor equal to \(\left(v_{r m s}^2+(500)^2\right) / v_{r m s}^2\) where \(v_{r m s}\) was the original mean square velocity of the gas.
4 will be different on the top wall and bottom wall of the vessel.
7 RBTS PAPER

164189 At what temperature is the r.m.s velocity of a hydrogen molecule equal to that of an oxygen molecule at \(47^{\circ} \mathrm{C}\) :

1 \(80 \mathrm{~K}\)
2 \(-73 \mathrm{~K}\)
3 \(3 \mathrm{~K}\)
4 \(20 \mathrm{~K}\).
7 RBTS PAPER

164190 For a gas if ratio of molar specific heats at constant pressure and volume is \(\gamma\) then value of degrees of freedom is :

1 \(\frac{3 \gamma-1}{2 \gamma-1}\)
2 \(\frac{2}{\gamma-1}\)
3 \(\frac{9}{2}(\gamma-1)\)
4 \(\frac{25}{2}(\gamma-1)\)
NEET Test Series from KOTA - 10 Papers In MS WORD WhatsApp Here
7 RBTS PAPER

164187 The density of a gas is \(6 \times 10^{-2} \mathrm{~kg} / \mathrm{m}^3\) and the root mean square velocity of the gas molecules is \(500 \mathrm{~m} / \mathrm{s}\). The pressure exerted by the gas on the walls of the vessel is :

1 \(5 \times 10^3 \mathrm{~N} / \mathrm{m}^2\)
2 \(1.2 \times 10^{-4} \mathrm{~N} / \mathrm{m}^2\)
3 \(0.83 \times 10^{-4} \mathrm{~N} / \mathrm{m}^2\)
4 \(30 \mathrm{~N} / \mathrm{m}^2\).
7 RBTS PAPER

164188 A cubic vessel (with face horizontal + vertical) contains and ideal gas at NTP. The vessesl is being carried by a rocket which is moving at a speed of \(500 \mathrm{~ms}^{-1}\) in vertical direction. The pressure of the gas inside the vessel as observed by us on the ground

1 remains the same because \(500 \mathrm{~ms}^{-1}\) is very much smaller thatn \(v_{r m s}\) of the gas.
2 remains the same because motion of the vessel as a whole does not affect the relative motion of the gas molecules and the walls.
3 will increase by a factor equal to \(\left(v_{r m s}^2+(500)^2\right) / v_{r m s}^2\) where \(v_{r m s}\) was the original mean square velocity of the gas.
4 will be different on the top wall and bottom wall of the vessel.
7 RBTS PAPER

164189 At what temperature is the r.m.s velocity of a hydrogen molecule equal to that of an oxygen molecule at \(47^{\circ} \mathrm{C}\) :

1 \(80 \mathrm{~K}\)
2 \(-73 \mathrm{~K}\)
3 \(3 \mathrm{~K}\)
4 \(20 \mathrm{~K}\).
7 RBTS PAPER

164190 For a gas if ratio of molar specific heats at constant pressure and volume is \(\gamma\) then value of degrees of freedom is :

1 \(\frac{3 \gamma-1}{2 \gamma-1}\)
2 \(\frac{2}{\gamma-1}\)
3 \(\frac{9}{2}(\gamma-1)\)
4 \(\frac{25}{2}(\gamma-1)\)
7 RBTS PAPER

164187 The density of a gas is \(6 \times 10^{-2} \mathrm{~kg} / \mathrm{m}^3\) and the root mean square velocity of the gas molecules is \(500 \mathrm{~m} / \mathrm{s}\). The pressure exerted by the gas on the walls of the vessel is :

1 \(5 \times 10^3 \mathrm{~N} / \mathrm{m}^2\)
2 \(1.2 \times 10^{-4} \mathrm{~N} / \mathrm{m}^2\)
3 \(0.83 \times 10^{-4} \mathrm{~N} / \mathrm{m}^2\)
4 \(30 \mathrm{~N} / \mathrm{m}^2\).
7 RBTS PAPER

164188 A cubic vessel (with face horizontal + vertical) contains and ideal gas at NTP. The vessesl is being carried by a rocket which is moving at a speed of \(500 \mathrm{~ms}^{-1}\) in vertical direction. The pressure of the gas inside the vessel as observed by us on the ground

1 remains the same because \(500 \mathrm{~ms}^{-1}\) is very much smaller thatn \(v_{r m s}\) of the gas.
2 remains the same because motion of the vessel as a whole does not affect the relative motion of the gas molecules and the walls.
3 will increase by a factor equal to \(\left(v_{r m s}^2+(500)^2\right) / v_{r m s}^2\) where \(v_{r m s}\) was the original mean square velocity of the gas.
4 will be different on the top wall and bottom wall of the vessel.
7 RBTS PAPER

164189 At what temperature is the r.m.s velocity of a hydrogen molecule equal to that of an oxygen molecule at \(47^{\circ} \mathrm{C}\) :

1 \(80 \mathrm{~K}\)
2 \(-73 \mathrm{~K}\)
3 \(3 \mathrm{~K}\)
4 \(20 \mathrm{~K}\).
7 RBTS PAPER

164190 For a gas if ratio of molar specific heats at constant pressure and volume is \(\gamma\) then value of degrees of freedom is :

1 \(\frac{3 \gamma-1}{2 \gamma-1}\)
2 \(\frac{2}{\gamma-1}\)
3 \(\frac{9}{2}(\gamma-1)\)
4 \(\frac{25}{2}(\gamma-1)\)